半世纪的

Before whaling the largest population 239,000 (range 202,000 to 311,000) was in the Antarctic[5] but now there remain only much smaller (around 2,000) concentrations in each of the North-East Pacific, the Antarctic, and the Indian Ocean.

据统计，半个世纪以前，全世界的蓝鲸大约还有30万只之多，到1974年尚有25000只，而现在仅剩有大约2000只了。

The Canadian foreign minister Maxime Bernier has resigned after leaving classified documents in a nonsecure location.

美国和加拿大的摩托党存在起码有半个世纪了。

A half a century later, western Pennsylvania became a boomtown, built on its substantial petroleum reserves.

半个世纪之后，西宾夕法尼亚州由于它丰富的石油资源变成了一个新兴城市。

Under a bottomry contract, loans were granted to merchants with the provision that if the shipment was lost at sea the loan did not have to be repaid.

Bottomry也被印度在公元前600年，也明白在古希腊早在公元前4世纪后半叶。bottomry下，贷款合同规定给予商人，如果发货是在海上失踪的贷款并没有得到偿还。

Since more than half a century ago, bulge test technology has been widely used in the thin film test.

半个多世纪以来，鼓膜实验测试技术被广泛地运用于薄膜的力学性能测试中。

Half a century later GM is a byword for poor management.

半个世纪后，通用汽车是不良管理的代名词。

Aoki. His research on cooking, tea, wine, etc, canonically and precisely, although has gone for more than half-century, which still be of great value.

青木先生的研究成果涉及到烹饪、茶、酒等各个方面，虽然距今已经半个世纪以上，但是因为研究规范、严谨，其价值在未来将继续存在。

Her novels are full of modernity and she casts castigation and criticism upon feudal ethics.

半个多世纪以来，应该说，学界对冯沅君小说的研究已做了不少。

This article, through summarizing the progresses in the evapotranspiration (ET0) methods research, analyzes representative ET0 computation methods emphasized on three periods of the world: modificative Penman, Penman-Monteith and standard ASCE-PM. We take 20th century 90's last stages and 21th century initial period's world newest 19 experimental achievements with lysimeter's actual value rating ET0 value as the foundations, analyzing general usage of the ET0 computational method regarding the different climatic conditions. Although the effect of PM method application is desirable in many areas, many local effects are still unsatisfactory; the method MP and so on are more suitable in part of areas; the PM and MP method are not popular, the special attention must be paid to the standard ASCE-PM method. In brief, these kinds of half theory (semi-empirical) methods only suit in certain areas.

通过对ET0计算公式研究进展的总结，分析了在世界上三个时期比较有代表性的计算蒸发腾发量(ET0)的主要公式：修正Penman公式、Penman-Monteith公式及标准ASCE-PM公式；以20世纪90年代末期和21世纪初期世界上最新的19个用Lysimeter实验值率定ET0计算值的实验成果为基础，对于不同气候条件下ET0计算方法的普适性分析评估认为：虽PM公式应用效果较好的地区较多，但也有不少地区效果欠佳，MP等公式在一部分地区较好，PM与MP公式并非普适性的，要特别关注标准ASCE-PM公式，总之，这类半理论公式均有一定的地区性。

The musical instruments used are worth mentioning. Of the 20 instruments, 5 were made as early as the ninth century, among which two violins have the longest history. One is a Stradivarius made at 1724, the other a Guamerius at 1776. Being praised by musicians and collectors from all over the world over the past century, they are the best of the best musical instruments.

尤其值得一提的是演奏家们所使用的乐器，乐团现有的二十把乐器中，有五把产于19世纪，其中年代最为久远的是两把小提琴，一把是1724年的名牌Stradivarius，另一把是1776年的Guarnerius，半个世纪以来，一直被各国音乐家和收藏家所推崇，属于世界级的收藏绝品。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！